Update index.html

index.html

@@ -118,7 +118,7 @@ <h2 class="my-2">Polybius Square</h2>
               <p>
                 The Polybius Square is a cipher that is achieved by arranging a
                 typical alphabet into a grid. Each letter is represented through
-                a coordinate. For example, in the above table, the letter "B"
+                a coordinate. For example, the letter "B"
                 would be represented by the numerical pair "21".
               </p>
               <hr />